I've heard that you should put it down on a makom patur while still walking. However, a true makom patur is tall and skinny, like a post, and therefore possibly difficult to find.

I've also heard that you walk into a reshus hayachid - private property - and, again, while still walking, hand it to another person who is also inside the same reshus hayachid. The rationale here is that "carrying" requires both an akira and hanacha, an uprooting and a setting. In this case, then, since you're still walking it's not considered a true hanacha.

"then if you didn't stop in a rshus harabim..." since leaving the rshus hayachid? Or at this moment you're still walking? "go back..." should I read into the "back" or can you go into any rshus hayachid? Does passing it to someone else help or once you've arrived in a rshus hayachid you can just lay it down by yourself?
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ShmuelAug 5 '11 at 6:46

Once you're in a Reshuth HaYahid, you should be able to lay it down yourself.
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Seth JAug 5 '11 at 14:06

I think it might depend if your in a real reshus harabim or not. If you're just in a karmelis, you may not need to worry about it as much. I think if you walked into a reshus harabim but did not stop you should turn around and go back to the reshus hayachid you came from. If that's not possible, you should try getting to another reshus hayachid to drop it off in. If you have to pause at a red light, move in circles so as to avoid stopping.